Bearing pin for temple rolls



Aug. 27, 1935.

S. DODGE BEARING PIN FOR TEMPLE ROLLS Filed June 15, 1954 [n/UeWJ/Of" @ie/"wood (2 by (QT dg@ fia/1y.

Patented Aug.- 27, `1935 .,LITE'DY STATES PATENT? Iii ' BEARING PIN `ron TEMPLE RoLLs v Sherwood 0. Dodge, Medford; Mass., 'assigner to f Guaranteed Parts, Inc.,-Allston,' Mass., :a cor-l v il poration of Massachusetts l 1 Application June'is, 1934, semina. 730,448

3 y.This inventionrelates to an improvement in bearing pins for .temple rolls. n' v i f f Certain'types `of'temple rolls for looms yafrerrotatably mounted at their opposite .ends =upon separate bearingpins. `In thread-cutting temples ,one of these .bearing :pins is located directly .beneath'a portion of the movable knife. before any of the parts of the temple have been subjected to wea-r .there is ample `clearance betweena yloweredge portion of fthe movable knife and the bearing pin located therebeneath, so' that these parts Ado not contact one with another. Continual 1 "sliding contact, however, 'between another lower edge portion of the movable knife and a surface of ythe `temple bar eventually .results in suicientwear to these members, particularly' the surface of'thesban to cause the knife to` gradually move downwardly in the Vbar as the wear progresses until the knife finally contacts with ,thebearing pin, whereupon further continued use of the temple will also wear .the pin until said` pin is yeventually severed by the knife. nItis evident that when a temple .bar hasbecome Worn lto such an 'extent that the knife .contacts Withthebearing vpin that if the baz` is not replaced imrnediately .the bearing `pin will Wear quickly, mustA necessarily be replaced. frequently. n

The object .of this invention -is to provide a bearing-,piniof :novel construction having a sleeve fconstitntingra roller mounted thereon and positioned to :heengaged and rotated by the movable knife in the Eevent`rx that the .temple vbar becomes worn sufficiently to-fpermitsaid knife to engage the roller, saidroll'er also Vbeing. constructed `of `a material lwhich will resist wear for a longer period than is possible with ,the material of which Ythe pin itself yisusually constructed., Y ....Another object of theinvention is-to provide a bearing pin having a rollerembodiedtherein of a-A diameter approximating that of the bearing portion of the pin, therebywmaking it possible to insert the pinfin the top of cover member of the temple bar and remove said pin therefrom in exactly the same manner as has been the custom with the pins heretofore in use.

Still another object of the invention is to provide a Aroller which may be sprung on or off the body portion of the bearing pin* The invention consists in an improved bearing pin for temple rolls as set forth in the following specification and particularlyas pointed out inl the claims thereof.

Referring to the drawingz- K Fig. 1 represents a sectional elevation of' a one `.endfof the latter being mountedupon'a be Normally, I

' for the. bearing pin. i

thread-.cutting temple, said section being? on .the longitudinal median line ofthe temple roll,

ing pin .embodying my invention.

Fig. .2 is .a verticallsectional elevation takenori the line 2--2 of Fig. 1 looking inthe directionLgfv thearrows-on said line. i 'n 'flvf Fig. 3 is a front elevation of Vthe .bearing/pin embodying myinvention illustrated. uponan V larged scale'.

. Fig.- 4 isa vperspective view of ,a'.mlieigprj ,1uY d Figs'. 5 and Gare front elevations similar toFig.

a.111usnaungino-d1oed.embodiments ofniynwn l tion. 7 1 Y Y Like numerals refer tolike .parts throughout' several views of .the drawing." 1 n, n In the drawing, referring y.part'icularly toFigs. l l to 4 inclusive, l representsa portion'of Ya temple bar of well-known form and -isa toplorlcover member for said b'ar. Located within aspace .9 provided between the .bar l andcoverv B isla. temple 12011.10, well .known in ythe art'. .'Iheouter end portiono-f ,the'roll' I0 Yis rotatably mounted .upona .bearing pin Il andthe inner endofsaid roll is ,rotatablymountedupon a bearing pin" l2, ivlflich ,pinconstitut'es 'the device o f thislinvienv tion. y A stationary knife bladel3 of well-knownform is secured by meansrof a screwflito the cover '8L 3p and .a Jmovable knife l5 is mounted ina ,welle if known manner to both rock .and 'slideinla groove .I 6 provided .therefor in the. Cover V8.y 'Asprlng l1 is provided `for the movable knife 'I 5 andantslto always return said'knife 'toy its' nonnal-position 3 5 whenever said knifeis moved fromsaid p0s`tiongv i Inthe-operation of the device a `clorribinedlrofck` ing andr sliding movement is imparted 'to "the knife 1.5 saidknii'e first being rocked 4in.1a,'vve1l'l known mannerLfrom 1a normal .position .as illus- '40 mated A1n nig. .2 Amail an edge. thereof, contacts with a surface 25`of tlie bar -L The'knife then slides rearwardly in the groove I6 with the surface 24 of said knife still in contact with the surface 25 of the bar. These contacting surfaces 24 45 and 25 are never lubricated and -it is evident that both surfaces will in time become considerably worn and eventually a surface'26 of the knife will contact lwith the periphery ofthe bearing pini` I l 2. Heretofore when this condition of affairs vex-y 50 isted the old type bearing pin immediatelybegan to wear away and this'wear progressed Auntil broke at the point of contact.

Applicants bearing pin I2 is constructed and' 65 pin. The roller 22 is furthermore split at 23 in order that it may be expanded and sprung'into the groove 2I. Y

position in the cover B, the roller 22 fis klocated 'a' bearing member' therefor.

arranged to reduce the friction and consequent Wear resulting from the contact of the knife I5 with the bearing pin I2 and constitutes the device ofthe present invention. This bearing pin I2 is mounted in the cover 8 andrembodies therein a cylindrical bearing portion I8 which projects into the temple roll IB and upon which one end of said roll rotates; a portion le" which lhas screwthreaded `engagement "with, the cover, and a head 2U. An annular groove 2| is formed in the periphery of the bearingl portion I3 and in this groove a sleeve 22, constituting a roller, is rotatably mounted. 'I'he roller 22 is constructed of spring steel and is of approximately the same out-y side diameter as the cylindrical portionY I8 of the When the bearing pin I2 is inv directly beneath and in the path of the knife I5, and vvhen'the surfaces A2li and v25 of the knife and barrespectively become worn to such an extent thatthe7 surfacey 26 of the knife engages the roller 22,*said roller Will be caused to rotate upon the pin, therebyreducing ythejfriction and eliminating'much 'of"tl`1e'Wear; and it is evident that as the Wearupon the pin is reduced that the Wear between theV surfaces 24 'and'25` Will also be reduced. It is: -furthermore evidentthat if afterlong continuedwear the roller 22 does become' Worn to such an extent thatfit is necessary thatit vbe replaced, lsuch replacement mayl beY accomplished with little trouble and at small expense;

In Fig. 5"I have illustrated' a modified embodi-v ment of myinvention in` Which 728v constitutes a cylindrical bearing portion, 2S, a screw-'threaded portion and ahead.V Y An annular groove 3l is formed in the periphery of the cylindrical portion 28, and in this groove split sleeves @Zand 33,*constituting rollers, similar to the sleeve 23 previously v y screw having Ya plain bearing portion embodied described, fare'mounted side by side.v The sleeve ,32 lis positioned upon thepin 27 for the purpose of being engagedby a knife Ida-nd when so en- ,i gagedfwill rotate and reduce the friction andv Wear between the contacting surfaces. The sleeve 3 3 projects into the temple rcll Iii and constitutes The diameter of the sleeves 32 and 33 is preferably approximately the same as that ofthe cylindrical portion 28.

ylnjlig. '6 ,still another modied embodiment of the yinvention .is 'illustrated in vwhich a bearing pin embodies therein'a'cylindrical portion 35, a screlwfthreadedportion 3 and a head 3l. The cylindrical portion 35 is reduced in diameter atVSS,

i andjrotatably mounted upon this reduced portion'are Ysleeves 39 and'flil constituting rollers. The 'rollers' 39 and Il@ are held in4 position upon the reduced portion 38 of the. pin by 'expanding orheading an end portion'jdl ofthe pin after the rollershave beenmounted thereon in a manner toprevent longitudinal movement ofthe rollers on the pin and in effect the rollers are mounted in a groove upon the cylindrical portion Z55' of the pin in the same manner as are the rollers illustrated in Fig.` 5. The rollers 39 and lil are solid and are approximately the same discrew-threaded portion of the bearing pin, and

itis therefore evident that each bearing pin may be inserted4 in and removed fromsaid cover in exactly the same manner as has been the custom with Athe ,bearingV pins heretofore in common use.

I claim:- l v L Afbearingpin for temple rolls embodying therein a screw-threaded portion and a plain bearing portion, the latter being provided With an annular-groove therein, anda roller mounted in said groove and adapted to rotate therein when engaged by a temple knife, the diameter of said roller being approximately thefsame as the extreme diameter of said bearing portion.

' U13. A bearing pin'for templerolls comprising a screw having a plain bearing portionrembodied ftherein, the latter being provided with 'an annular groove extending around the periphery thereof, and a roller of a diameter approximating the extreme-'diameter of said bearing portion mounted in said groove and adapted to be engagedby a temple knife, said roller being constructed offspringmetal andsplit longitudinally thereof, vvhereby'it may be lexpanded and sprung into said groove.

3. A bearing pm fortemple rolls comprising a therein, the latter being provided with an annular groove extending around the periphery thereof, and ja pairjof rollers mounted side by side in said groove,y one of said rollers `being adapted to rotatev when engaged by a temple knife and the other roller constituting a bearing member for atemple roll.

A Inaloom temple a temple bar, a cover therefor 'provided with a screw-threaded hole therein, a bearing pin for a temple roll mounted in said cover, said pin having screw-threaded engagementrwith said hole and vhaving a plain bearing portion embodiedr therein provided with a groove extending therearound, and a roller of a diameter approximating the extreme diameter of said bearing portion mounted in said groove'andadapted 

